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Finding the Fourth Proportional to 21,708.73, 32,568.36 and 8,561.62

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Solution

The fourth proportional to 21,708.73, 32,568.36 and 8,561.62 is: 12,844.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,708.73 : 32,568.36 = 8,561.62 : x
  2. Step 2: Convert to fraction form
    21,708.73/32,568.36 = 8,561.62/x
  3. Step 3: Cross multiply
    21,708.73x = 32,568.36 × 8,561.62
  4. Step 4: Simplify right side
    21,708.73x = 278,837,922.34
  5. Step 5: Solve for x
    x = 278,837,922.34/21,708.73
  6. Step 6: Final answer
    x = 12,844.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.